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# Mark Hudson Beale

### MathWorks

28 total contributions since 2011

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GPU computing doesn't work with timedelaynet, inputDelays != 0:0
Currently the GPU implementation of training does not parallelize for single series. If you have a long series and can break it...

alrededor de 4 años ago | 0

How can I extract the values of weights and biases after each training epoch?
Greg is right, the function to get weights outside of a training function is getwb. Within a training function it is slightly...

más de 4 años ago | 0

GPU training of neural network with parallel computing toolbox unreasonably slow, what am I missing?
Getting a speed up with a GPU requires a couple things: 1) The amount of time spent in gradient calculations (which happen on...

más de 4 años ago | 0

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When using GPU with neural net, I run out of shared memory per block; is there a way to handle?
I was able to reproduce your error. In MATLAB 13a the nndata2gpu array transformation is no longer required and if gpuArray is u...

más de 6 años ago | 0

Solved

Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

más de 7 años ago

Solved

Given a and b, return the sum a+b in c.

más de 7 años ago

Solved

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

más de 7 años ago

Solved

Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

más de 7 años ago

Solved

Is my wife right?
Regardless of input, output the string 'yes'.

más de 7 años ago

Delays in the Neural Network Toolbox
Yes you are correct. The way you have set delays the network at each time step will be responsive to the current fuzzy time of ...

casi 8 años ago | 0

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Architecture of the neural network by nftool?
You have correctly understood how the main part of the neural network works, however, the inputs and outputs of the neural netwo...

casi 8 años ago | 0

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Disable Spacebar Command for Neural Network
You can turn off the training window (and therefore not have a stop button to accidentally trigger) with this command before cal...

más de 8 años ago | 0

Combine parallel toolbox and neural network toolbox
Currently parallel computing can be used to train multiple networks on different MATLAB workers at the same time. This speeds u...

más de 8 años ago | 0

Neural Nets for Classification
Yes, PATTERNNET is recommended for classification problems. TRAINLM is a good training function for most problems. For small...

más de 8 años ago | 0

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Knowing the Weights in Matlab
The biases for each layer i are net.b{i}. So for a two layer network the biases are net.b{1} and net.b{2}. The weights to la...

más de 8 años ago | 2

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Crossvalidation of Neural Networks
I am not sure I understand your question but perhaps this will help. If you want to divide your data set into a design set an...

más de 8 años ago | 0

NARX perform additional tests on network: from GUI to code
To apply the network to new data after training do the following: inputSeries2 = { ... your new input series ... }; [inp...

más de 8 años ago | 1

Unable to load trained network, maybe versionconflict
Unfortunately the R2010a version of the toolbox cannot support neural networks created with R2010b or later versions of the tool...

más de 8 años ago | 0

Neural Network - Multi Step Ahead Prediction
Here is an example that may help. A NARX network is trained on series inputs X and targets T, then the simulation is picked up ...

más de 8 años ago | 1

How to forecast with Neural Network?
You can convert the NARXNET from open-loop to closed-loop form to predict ahead any number of timesteps for which you have data ...

más de 8 años ago | 3

Different results by backpropagation algorithm using different MatLab versions (2008 and 2010)
First, I assume you are setting the random seed before running this code to try and reproduce exact results? Otherwise, every r...

casi 9 años ago | 0

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Self Organizing Maps
The prototype pattern for each neuron is its weight vector. To see all the neurons' weight vectors: net.IW Each row rep...

casi 9 años ago | 0

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how to use weights and thresholds from Neural Network toolbox
You need to first preprocess inputs, then post process outputs as follows: xx = [0:0.5:5] for i=1:length(net.inputs{1}.p...

casi 9 años ago | 0

How do I display the connection weights after each epoch for a perceptron network using MATLAB code?
The function PLOTWB displays weights and biases graphically. plotwb(net) You can attach this function to any network obj...

casi 9 años ago | 0

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Change preprocessing parameter in neural network
You can try this workaround: net = struct(net); net.inputs{1}.processParams{2}.ymin = 0.1; net = network(net);

casi 9 años ago | 0

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Plant model
The function GENSIM converts a neural network once it has been trained in MATLAB into an equivalent Simulink block diagram.

casi 9 años ago | 1

| accepted